RFR: 8325766: Review seclibs tests for cert expiry [v2]

[Matthew Donovan]

> This PR updates the CertificateBuilder with a new method that creates a new instance with common fields (subject name, public key, serial number, validity, and key uses) filled-in. One test, IPIdentities.java, is updated to show how the method can be used to create various certificates. I attached screenshots that compare the old hard-coded certificates (left) with the new generated certificates.
> 
> ![trusted-cert](https://github.com/user-attachments/assets/4bfaca10-74f3-4d24-9796-288358ae00e1)
> ![server-cert](https://github.com/user-attachments/assets/51ce8ed2-0784-44ab-96a1-9d0a2ea66aaa)
> ![client-cert](https://github.com/user-attachments/assets/5090a71e-ef7a-4303-ae1a-78f89878d1c0)

Matthew Donovan has updated the pull request incrementally with one additional commit since the last revision:

  changed boolean array initialization

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Changes:
  - all: https://git.openjdk.org/jdk/pull/23700/files
  - new: https://git.openjdk.org/jdk/pull/23700/files/e0da93d4..9257293e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23700&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23700&range=00-01

  Stats: 3 lines in 2 files changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/23700.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23700/head:pull/23700

PR: https://git.openjdk.org/jdk/pull/23700